JP2019018963A - Carrying conveyor - Google Patents

Abstract

To provide a carrying conveyor capable of preventing a conveyor chain from going wrong due to jamming of a foreign matter in the conveyor chain.SOLUTION: A carrying conveyor includes a conveyor chain 20 having slats 23, on which conveyance articles are placed, arranged in a manner covering an open face of a groove 31a forming a passage for the conveyor chain 20. Accordingly, this prevents a foreign matter, such as a bolt, a nut, or a wire, from falling from above into the groove 31a. Thus, the conveyor chain 20 is prevented from going wrong due to jamming of the foreign matter fallen in the conveyor chain 20.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a transport conveyor, and more particularly to a transport conveyor that can prevent foreign matter from being caught in the conveyor chain and causing the conveyor chain to fail.

  2. Description of the Related Art Conventionally, a type called a slat conveyor is known as a conveyor for conveying a conveyed product. With regard to such a slat conveyor, for example, in the following Patent Document 1, “The structure of a slat conveyor is a structure in which two chains forming an endless track are arranged in parallel, and the two chains are connected by slats. This chain circulates along the endless track by the rotation of a pair of sprockets installed at both ends of the endless track.A rail is installed between the pair of sprockets, and the chain roller rolls and contacts the chain on this rail. Therefore, the long material placed on the slat moves with the chain pulled by the rotation of the sprocket.

  On the other hand, in the railway vehicle inspection / repair facility, the slat conveyor 100 shown in FIG. FIG. 5 is a cross-sectional view of a conventional slat conveyor 100. In the conventional slat conveyor 100, conveyor chains 110 forming two endless tracks are arranged in parallel. Each conveyor chain 110 is provided with a plurality of slats 111 on which pallets P are placed. The axle of the railway vehicle (not shown) is carried on the pallet P. The conveyor chain 110 circulates along the endless track by the rotation of a pair of sprockets (not shown) installed at both ends of the endless track. Between the pair of sprockets, a grooved steel 120 with the open surface of the groove 121 facing upward is provided, and the conveyor chain 110 moves while the roller 112 is in rolling contact with the groove 121. Therefore, the pallet P placed on the slat 111 and the axle of the railway vehicle move together with the conveyor chain 110 that is pulled by the rotation of the pair of sprockets. In addition, a scaffold plate 140 supported by the support column 130 is laid on both sides of the grooved steel 120, and an operator works on the scaffold plate 140 to perform an axle repair work.

JP 2000-264422 A (see paragraph 0004)

  However, in the conventional slat conveyor 100 shown in FIG. 5, the width of the slat 111 is smaller than the width of the groove 121, and a gap S is formed in the horizontal direction between the end of the slat 111 and the end of the groove 121. It was. Therefore, when small articles (hereinafter referred to as “foreign matter”) such as bolts, nuts, and wires fall into the groove portion 121 from the gap S, the foreign matter is caught in the conveyor chain 110, causing a failure of the conveyor chain 110. There was a question of becoming.

  The present invention has been made to solve the above-described problems, and in particular, an object of the present invention is to provide a transport conveyor that can prevent foreign matter from getting caught in the conveyor chain and causing the conveyor chain to break down.

  In order to achieve this object, a conveyor according to the present invention includes a pair of sprockets provided at a predetermined interval in the conveyance direction of a conveyed product, and an annular conveyor chain spanned between the pair of sprockets. One of the sprockets is driven to circulate the conveyor chain so as to convey a conveyed product between the pair of sprockets, and a groove extending between the pair of sprockets is formed, and an open surface of the groove is formed. The conveyor chain is provided with a guide member provided between the pair of sprockets facing upward, and the conveyor chain includes two chain bodies formed in an annular shape with adjacent plates rotatably connected to each other with a predetermined interval therebetween. A pair of chain bodies arranged in a row, and rotatably provided between the pair of chain bodies and rolling the groove portion A plurality of rollers are formed in a plate shape on which the conveyed product is placed on an upper surface, and the plurality of rollers roll between the groove portions so that the open surfaces of the groove portions are covered between the pair of chain main bodies. It is characterized by comprising a plurality of slats to be spanned.

  On the bottom wall of the guide member, a rail member that extends between the pair of sprockets and on which the roller rolls protrudes upward.

  A guide groove extending between the pair of sprockets and rolling the roller is formed in the upper surface of the rail member.

  A plate-like scaffold plate configured as a worker's scaffold is laid at the same height as or lower than the open surface of the groove part across both side walls of the guide member, and the slat is vertically The guide plate is provided so as not to overlap the scaffold plate in the vertical direction while leaving a gap with the guide member.

  Below the guide member, an elastic member that is in contact with the upper surface of the slat is provided in parallel with the guide member with respect to the slat conveyed with the upper surface facing downward.

  According to the conveyance conveyor of Claim 1, there exists the following effect. A pair of sprockets are provided at a predetermined interval in the conveyance direction of the conveyed product. An annular conveyor chain is stretched around the pair of sprockets. A guide member extends between the pair of sprockets, and a groove extending between the pair of sprockets is formed in the guide member. The guide member is provided between the pair of sprockets so that the open surface of the groove portion faces upward. The conveyor chain is provided with a plurality of rollers that roll in the groove. The plurality of rollers are rotatably provided between the pair of chain bodies. Specifically, the pair of chain main bodies are formed in an annular shape in which adjacent plates are rotatably connected to each other, and are arranged with a predetermined interval therebetween. The plurality of rollers are rotatably provided between the pair of chain bodies. In addition, a slat that is formed in a plate shape and on which a conveyed product is placed is spanned between the pair of chain main bodies. The conveyed product is placed on the slat. When one of the sprockets is driven, a plurality of rollers move between the pair of sprockets while rolling in the groove, and accordingly, a conveyed product placed on the slats moves between the sprockets. And since this slat is spanned between a pair of chain bodies so that the open surface of a groove part may be covered in the state in which the several roller is rolling the groove part, foreign materials, such as a bolt, a nut, and a wire, from the upper part Can be prevented from falling into the groove. Therefore, it is possible to prevent the fallen foreign matter from being caught in the conveyor chain and causing the conveyor chain to break down.

  According to the conveyance conveyor of Claim 2, in addition to the effect which the conveyance conveyor of Claim 1 has, there exists the following effect. On the bottom wall of the guide member, a rail member that extends between the pair of sprockets and on which the roller rolls protrudes upward. Therefore, even if the foreign matter falls into the groove, the foreign matter falls on the bottom wall of the guide member. Therefore, it can prevent more effectively that the fallen foreign material is bitten by the conveyor chain, and the conveyor chain breaks down.

  According to the conveyance conveyor of Claim 3, in addition to the effect which the conveyance conveyor of Claim 2 has, there exists the following effect. On the upper surface of the rail member, a guide groove extending between the pair of sprockets and rolling the roller is recessed. For this reason, when the conveyed product is placed on the slat, it is possible to restrict the moving direction of the roller from shifting to the left or right due to the left and right weight balance of the conveyed product. In addition, since the direction of movement of the roller can be regulated, the direction of movement of the roller is deviated, and as a result, a horizontal gap is generated between the end of the slat and the open surface of the groove. Can be prevented from falling.

  According to the conveyance conveyor of Claim 4, in addition to the effect which the conveyance conveyor in any one of Claim 1 to 3 has, there exists the following effect. Since there is a gap in the vertical direction between the slat and the guide member, it is possible to prevent the slat from coming into contact with the guide member and inhibiting the rotation of the conveyor chain due to the friction. Therefore, the conveyor chain can be smoothly circulated. In addition, a plate-like scaffold plate configured as a worker's scaffold is laid at the same height as or lower than the open surface of the groove with both side walls of the guide member interposed therebetween. The slat is provided so as not to overlap the scaffold plate in the vertical direction. Here, the edge part of a scaffold plate may be formed so that it may wave up and down by the influence at the time of cutting. However, even if the edge of the scaffold plate is waved up and down, the slat is arranged so as not to overlap the scaffold plate, so the gap formed between the slat and the guide member is not Unaffected by the edge of the plate. Therefore, such a gap can be reliably ensured and the conveyor chain can be smoothly circulated.

  According to the conveyance conveyor of Claim 5, in addition to the effect which the conveyance conveyor in any one of Claim 1 to 4 has, there exists the following effect. Below the guide member, a sliding member that comes into contact with the upper surface of the slat is provided in parallel with the guide member with respect to the slat conveyed with its upper surface facing downward. Therefore, the conveyor chain can be operated smoothly, vibrations generated in the conveyor chain can be reduced, and the conveyor chain can be prevented from being out of order and coming off the sprocket.

It is a top view of a slat conveyor. It is sectional drawing of the slat conveyor in the II-II sectional line of FIG. (A) is a side view of the conveyor chain, (b) is a bottom view of the conveyor chain viewed from the direction of arrow IIIb in FIG. 3 (a), and (c) is a conveyor chain taken along section line IIIc-IIIc in FIG. 3 (a). FIG. It is an expanded sectional view of the slat conveyor in the IV-IV sectional line of FIG. It is sectional drawing of the conventional slat conveyor.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view of the slat conveyor 1. FIG. 2 is a cross-sectional view of the slat conveyor 1 taken along the line II-II in FIG. 1 and 2, only a part of the conveyor chain 20 is illustrated, and the other part is illustrated by a one-dot chain line. Further, the illustration of the axle of the railway vehicle serving as a transported object is omitted, and the pallet P on which the axle of the railway vehicle is placed is indicated by a two-dot chain line.

  The slat conveyor 1 is used for transporting the axle of a railway vehicle at a railway vehicle inspection facility, and in particular, can prevent foreign matter from getting into the conveyor chain 20 and causing the conveyor chain 20 to break down. It is.

  The slat conveyor 1 mainly includes a pair of sprockets 10 and 11 provided at a predetermined interval in the transport direction X, an annular conveyor chain 20 spanned between the pair of sprockets 10 and 11, and the conveyor chain 20. It is comprised by the guide member 30 which forms a channel | path.

  As shown in FIG. 1, two sets of the pair of sprockets 10 and 11, the conveyor chain 20, and the guide member 30 are provided in parallel. A slat 23 is attached to each conveyor chain 20. The pallet P is bridged to each slat 23, and the axle (not shown) of the railway vehicle is placed on the pallet P. In this state, the sprocket 10 is driven and the conveyor chain 20 is circulated between the pair of sprockets 10 and 11, whereby the pallet P and the axle of the railway vehicle are transported in the transport direction X.

  In the railway vehicle inspection facility, the pallet P and the axle of the railway vehicle mounted on the pallet P are shown in FIGS. 1 and 2 on the upstream side of the slat conveyor 1 shown in FIGS. Although a transport device for transporting toward the slat conveyor 1 is further provided, in the present embodiment, illustration and description thereof are omitted.

  The pair of sprockets 10 and 11 transmit the rotation of the shaft 12 to the conveyor chain 20, and one set of sprockets 10 and 10 functioning as a driving side and one set of sprockets 11 and 11 functioning as a driven side It is constituted by.

  One set of sprockets 10 and 10 is fixed to both ends of the shaft 12. The shaft 12 is rotatably spanned via a bearing 13 between two struts 40 erected from the slab SL (see FIG. 2). A sprocket 14 is fixed in the middle of the shaft 12, and an annular chain (not shown) is spanned between the sprocket 14 and the sprocket 51 of the motor 50. Therefore, by driving the motor 50, the shaft 12 rotates through the chain, and the sprockets 10, 10 fixed to both ends of the shaft 12 can be rotated.

  One set of sprockets 11, 11 is fixed to a shaft 15. The shaft 15 is rotatably supported via a bearing 16 between a pair of support columns 41 erected from the slab SL (see FIG. 2). Therefore, by rotating the sprockets 10, 10, the sprockets 11, 11 can be rotated via the conveyor chain 20 spanned between the pair of sprockets 10, 11.

  As shown in FIG. 2, in addition to the pair of sprockets 10 and 11, a sprocket 17 is provided on the upstream side of the sprocket 11, and the conveyor chain 20 is engaged with the sprocket 17. The sprocket 17 adjusts the tension of the conveyor chain 20 and is provided to be movable up and down.

  That is, it is possible to adjust the tension of the conveyor chain 20 to be increased by setting the sprocket 17 downward, and to adjust the tension of the conveyor chain 20 to be low by setting the sprocket 17 upward. Therefore, the conveyor chain 20 can be adjusted to an appropriate tension, and the conveyor chain 20 can be prevented from coming off the sprockets 10 and 11.

  The conveyor chain 20 circulates between the pair of sprockets 10 and 11 and conveys the pallet P and the axle of the railway vehicle in the conveyance direction X between the pair of sprockets 10 and 11. Here, the configuration of the conveyor chain 20 will be described with reference to FIG. 3A is a side view of the conveyor chain 20, FIG. 3B is a bottom view of the conveyor chain 20 viewed from the direction of arrow IIIb in FIG. 3A, and FIG. 3C is FIG. It is sectional drawing of the conveyor chain 20 in sectional line IIIc-IIIc of a). FIG. 3 shows only a part of the conveyor chain formed in an annular shape.

  The conveyor chain 20 is a pair of chain bodies in which two adjacent chain bodies, which are formed in an annular shape by rotatably connecting adjacent inner plates 21a and outer plates 21b, are arranged with a predetermined interval therebetween. 21, a plurality of rollers 22 rotatably provided between the pair of chain bodies 21, and a plurality of slats 23 spanned between the pair of chain bodies 21 so as to cover the plurality of rollers 22 It is constituted by.

  Each of the pair of chain main bodies 21 includes an inner plate 21a and an outer plate 21b, and the inner plate 21a and the outer plate 21b are arranged in a staggered manner so that both end portions thereof overlap each other. The pair of chain main bodies 21 are arranged so that the inner plates 21a and the outer plates 21b face each other.

  Cylindrical bushes (not shown) are fixed to both ends of the inner plate 21a, and each roller 22 is rotatably provided by being loosely fitted to the bushes. At both ends of the outer plate 21b, end portions of connecting pins 24 that are loosely fitted in the bushes are caulked. Thereby, the inner plate 21a and the outer plate 21b are relatively rotatable, and the conveyor chain 20 can be bent as a whole.

  The roller 22 rolls when meshed with the sprockets 10 and 11, and rolls in a path (groove portion 31 a) of the conveyor chain 20 formed by the guide member 30 (first guide member 31), as will be described later. To do. Therefore, even when a heavy object is transported on the slat 23 like an axle of a railway vehicle, the weight can be received by the roller 22. Therefore, the conveyor chain 20 is restrained from being loosened, and the conveyor chain 20 can be smoothly circulated.

  The slat 23 is a portion on which the pallet P and the axle of the railway vehicle are placed, and is formed in a plate shape. The slats 23 are spanned between a pair of inner plates 21a facing each other and between a pair of outer plates 21b facing each other. Therefore, the slat 23 moves in conjunction with the pair of inner plates 21a or the pair of outer plates 21b.

  Next, with reference to FIG. 2, FIG. 4, the relationship between the conveyor chain 20 mentioned above and the guide member 30 which forms the channel | path of the conveyor chain 20 is demonstrated. FIG. 4 is an enlarged cross-sectional view of the slat conveyor 1 taken along the line IV-IV in FIG.

  As shown in FIG. 2, the guide member 30 includes a first guide member 31 that extends between the pair of sprockets 10 and 11 and forms a passage (outward path) of the conveyor chain 20 that travels in the transport direction X, and the first guide member 30. A second guide member 32 that extends in parallel with the first guide member 31 and forms a passage (return path) of the conveyor chain 20 that travels in a direction opposite to the conveyance direction X is formed below the first guide member 31.

  A spacer member 33 extending between the pair of sprockets 10 and 11 is provided between the first guide member 31 and the second guide member 32. The first guide member 31 is supported by the spacer member 33, and the second guide member 32 is connected to the spacer member 33. Note that both ends of the second guide member 32 are supported by the support column 40 and the support column 41, and the middle thereof is supported by the support column 42 erected from the slab SL.

  As described above, the sprocket 17 is provided on the upstream side of the sprocket 11 so as to be movable up and down. Therefore, a third guide member 34 that feeds the conveyor chain 20 from the second guide member 32 is provided on the upstream side of the sprocket 17.

  The third guide member 34 projects obliquely downward from one end side of the second guide member 32, and feeds the conveyor chain 20 conveyed via the sprocket 17 from the second guide member 32. Therefore, even if the route through which the conveyor chain 20 passes depends on the position of the sprocket 17, the conveyor chain 20 can be smoothly fed out from the second guide member 32.

  As shown in FIG. 4, the first guide member 31 forms a groove 31a extending between the pair of sprockets 10 and 11, and is provided between the pair of sprockets 10 and 11 with the open surface of the groove 31a facing upward. . That is, a path (outward path) of the conveyor chain 20 is formed by the groove 31a. Specifically, the first guide member 31 is made of channel steel having a bottom wall 31b and side walls 31c erected from both edges of the bottom wall 31b, and is surrounded by the bottom wall 31b and the side walls 31c. The groove portion 31a is formed by the space, and the groove portion 31a forms a passage (outward path) of the conveyor chain 20.

  The groove 31a is formed such that the width W1 of the open surface thereof is smaller than the width W2 of the slat 23. In other words, the width W2 of the slat 23 is formed larger than the width W1 of the open surface of the groove 31a. That is, the slat 23 is configured and arranged so as to cover the open surface of the groove 31a in a state where the roller 22 rolls on the groove 31a. Therefore, it is possible to prevent foreign matters such as bolts, nuts, and wires from falling into the groove 31a from above. Therefore, it is possible to prevent the fallen foreign matter from being caught in the conveyor chain 20 and causing the conveyor chain 20 to break down.

  A rail member 60 is provided inside the groove 31a. The rail member 60 is erected from the bottom wall 31 b of the first guide member 31 and extends between the pair of sprockets 10 and 11. A guide groove 61 extending between the pair of sprockets 10 and 11 is recessed on the upper surface of the rail member 60, and the roller 22 of the conveyor chain 20 rolls between the pair of sprockets 10 and 11 along the guide groove 61. Move.

  Therefore, when the pallet P (axle of a railway vehicle) is placed on the slat 23, it is possible to restrict the movement direction of the roller 22 from shifting to the left or right by the weight balance between the left and right. Further, since the traveling direction of the roller 22 can be regulated, the traveling direction of the roller 22 is deviated, and as a result, a horizontal gap is generated between the end portion of the slat 23 and the open surface of the groove portion 31a. Can be prevented from falling into the groove 31a.

  Further, the guide groove 61 is recessed on the upper surface of the rail member 60 erected from the bottom wall 31 b of the first guide member 31. Therefore, even if the foreign matter falls into the groove portion 31a from the vertical gap S formed between the slat 23 and the groove portion 31a, the foreign matter falls on the bottom wall 31b of the first guide member 31. Become. Therefore, it can prevent that the fallen foreign material is bitten by the conveyor chain 20, and the conveyor chain 20 breaks down.

  An L-shaped steel 35 extending along the first guide member 31 is fixed to both side walls 31 c of the first guide member 31, and a plate-like scaffold plate 70 is fixed to the L-shaped steel 35. The scaffold plate 70 is composed of a striped steel plate with anti-slip protrusions (see FIG. 1) continuous on the surface by rolling, and serves as a scaffold for workers who perform inspection work.

  The L-shaped steel 35 has both side walls 31c of the first guide member 31 such that the upper surface of the scaffold plate 70 and the upper surface of the side wall 31c of the first guide member 31 (the open surface of the groove portion 31a) have substantially the same height. It is fixed to. On the other hand, the upper surface of the slat 23 is provided so that the height H from the upper surface of the scaffold plate 70 (the upper surface of the side wall 31c of the first guide member 31) is about 10 mm. It is formed to about 5 mm.

  That is, a gap S of about 5 mm is formed in the vertical direction between the lower surface of the slat 23 and the upper surface of the side wall 31 c of the first guide member 31. Therefore, it can suppress that the lower surface of the slat 23 contacts the upper surface of the side wall 31c of the 1st guide member 31, and the rotation operation | movement of the conveyor chain 20 is inhibited by the friction. Therefore, the conveyor chain 20 can be smoothly circulated.

  Moreover, since the level | step difference between the upper surface of the slat 23 and the upper surface of the scaffold plate 70 is about 10 mm, the operator who works on the scaffold plate 70 can also reduce the possibility that the step is rolled. Further, since the width W2 of the slat 23 is about 100 mm, the worker can easily straddle the slat 23, and the work efficiency of the axle inspection work can be improved.

  Further, the slats 23 are arranged so as not to overlap with the scaffold plate 70. In other words, the width W2 of the slat 23 is substantially the same as the width of the side walls 31c of the first guide member 31. The edge portion of the scaffold plate 70 may be formed so as to wave up and down due to the influence of cutting. However, even if the edge portion of the scaffold plate 70 is formed so as to wave up and down, the slat 23 is disposed so as not to overlap the scaffold plate 70, so the lower surface of the slat 23 and the first guide member The gap S formed between the upper surface of the side wall 31 c of the 31 is not affected by the edge of the scaffold plate 70. Therefore, such a gap S can be reliably ensured. Therefore, the conveyor chain 20 can be smoothly circulated.

  On the other hand, the second guide member 32 forms a groove 32a extending between the pair of sprockets 10 and 11, and is provided between the pair of sprockets 10 and 11 with the open surface of the groove 32a facing upward. That is, a path (return path) of the conveyor chain 20 is formed by the groove 32a. Specifically, the second guide member 32 is made of channel steel having a bottom wall 32b and a side wall 32c standing from both edges of the bottom wall 32b, and is surrounded by the bottom wall 32b and the side wall 32c. A groove 32a is formed by the space, and a path (return path) of the conveyor chain 20 is formed by the groove 32a.

  A sliding member 62 is provided inside the groove 32a. The sliding member 62 is erected from the bottom wall 32 b of the second guide member 32 and extends between the pair of sprockets 10 and 11. The sliding member 62 is provided so as to contact the upper surface of the slat 23 with respect to the slat 23 conveyed with its upper surface facing downward. Therefore, since the conveyor chain 20 can be operated smoothly, vibration generated in the conveyor chain 20 can be reduced, and the conveyor chain 20 can be prevented from being violently separated from the sprockets 10 and 11.

  With respect to the guide member 30 (the first guide member 31 and the second guide member 32) configured as described above, the conveyor chain 20 circulates between the pair of sprockets 10 and 11 as follows. That is, as shown in FIG. 2, the conveyor chain 20 travels in the transport direction X along the first guide member 31 in the first guide member 31, and the travel direction is opposite to the transport direction X by the sprocket 10. Wrapped in the direction.

  The conveyor chain 20 whose travel direction is folded enters the second guide member 32. Then, it travels in the direction opposite to the transport direction X along the second guide member 32, is sent out from the third guide member 34, passes through the sprocket 17, and then the travel direction again becomes the transport direction X by the sprocket 11. The first guide member 31 is advanced in the transport direction X along the first guide member 31.

  Since the conveyor chain 20 circulates in the passage formed by the guide member 30 in this manner, the pallet P placed on the slat 23 of the conveyor chain 20 and the axle of the railway vehicle are connected between the pair of sprockets 10 and 11. Can be transported in the transport direction X.

  As described above, the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

  In the above-described embodiment, the case where the roller 22 of the conveyor chain 20 rolls along the guide groove 61 has been described. However, the present invention is not limited to this. For example, you may comprise so that the roller 22 of the conveyor chain 20 may roll directly on the upper surface of the rail member 60, without providing the guide groove 61 in the upper surface of the rail member 60. FIG. Moreover, you may comprise so that the roller 22 of the conveyor chain 20 may roll directly on the bottom wall 31b of the 1st guide member 31, without providing rail member 60 itself. Further, a groove is provided in the roller 22, and a rail that fits into the groove provided in the roller 22 protrudes from the upper surface of the rail member 61 or the bottom wall 31 b of the first guide member 31. good.

  In the above-described embodiment, the case where two pairs of the sprockets 10 and 11, the conveyor chain 20, and the guide member 30 are provided in parallel has been described. However, the present invention is not limited to this. Three or more sets may be used.

  Furthermore, although embodiment mentioned above demonstrated the case where the 1st guide member 31 was comprised with channel steel, it is not limited to this. For example, you may make it provide the flange bent inside from the front-end | tip of the both-sides wall 31c of the 1st guide member 31. FIG. In this case, the slat 23 is provided so as to overlap with the flange. Even if comprised in this way, the effect similar to embodiment mentioned above is acquired.

1 Slat conveyor (conveyor)
10, 11 Sprocket 20 Conveyor chain 21 Chain body 21a Inner plate (plural plates)
21b Outer plate (multiple plates)
22 Roller 23 Slat 31 First guide member (guide member)
60 Rail member 61 Guide groove 70 Scaffold plate 80 Sliding member

  The present invention relates to a transport conveyor, and more particularly to a transport conveyor that can prevent foreign matter from being caught in the conveyor chain and causing the conveyor chain to fail.

  2. Description of the Related Art Conventionally, a type called a slat conveyor is known as a conveyor for conveying a conveyed product. With regard to such a slat conveyor, for example, in the following Patent Document 1, “The structure of a slat conveyor is a structure in which two chains forming an endless track are arranged in parallel, and the two chains are connected by slats. This chain circulates along the endless track by the rotation of a pair of sprockets installed at both ends of the endless track.A rail is installed between the pair of sprockets, and the chain roller rolls and contacts the chain on this rail. Therefore, the long material placed on the slat moves with the chain pulled by the rotation of the sprocket.

  On the other hand, in the railway vehicle inspection / repair facility, the slat conveyor 100 shown in FIG. FIG. 5 is a cross-sectional view of a conventional slat conveyor 100. In the conventional slat conveyor 100, conveyor chains 110 forming two endless tracks are arranged in parallel. Each conveyor chain 110 is provided with a plurality of slats 111 on which pallets P are placed. The axle of the railway vehicle (not shown) is carried on the pallet P. The conveyor chain 110 circulates along the endless track by the rotation of a pair of sprockets (not shown) installed at both ends of the endless track. Between the pair of sprockets, a grooved steel 120 with the open surface of the groove 121 facing upward is provided, and the conveyor chain 110 moves while the roller 112 is in rolling contact with the groove 121. Therefore, the pallet P placed on the slat 111 and the axle of the railway vehicle move together with the conveyor chain 110 that is pulled by the rotation of the pair of sprockets. In addition, a scaffold plate 140 supported by the support column 130 is laid on both sides of the grooved steel 120, and an operator works on the scaffold plate 140 to perform an axle repair work.

JP 2000-264422 A (see paragraph 0004)

  However, in the conventional slat conveyor 100 shown in FIG. 5, the width of the slat 111 is smaller than the width of the groove 121, and a gap S is formed in the horizontal direction between the end of the slat 111 and the end of the groove 121. It was. Therefore, when small articles (hereinafter referred to as “foreign matter”) such as bolts, nuts, and wires fall into the groove portion 121 from the gap S, the foreign matter is caught in the conveyor chain 110, causing a failure of the conveyor chain 110. There was a question of becoming.

  The present invention has been made to solve the above-described problems, and in particular, an object of the present invention is to provide a transport conveyor that can prevent foreign matter from getting caught in the conveyor chain and causing the conveyor chain to break down.

  In order to achieve this object, a conveyor according to the present invention includes a pair of sprockets provided at a predetermined interval in the conveyance direction of a conveyed product, and an annular conveyor chain spanned between the pair of sprockets. One of the sprockets is driven to circulate the conveyor chain so as to convey a conveyed product between the pair of sprockets, and a groove extending between the pair of sprockets is formed, and an open surface of the groove is formed. The conveyor chain is provided with a guide member provided between the pair of sprockets facing upward, and the conveyor chain includes two chain bodies formed in an annular shape with adjacent plates rotatably connected to each other with a predetermined interval therebetween. A pair of chain bodies arranged in a row, and rotatably provided between the pair of chain bodies and rolling the groove portion A plurality of rollers are formed in a plate shape on which the conveyed product is placed on an upper surface, and the plurality of rollers roll between the groove portions so that the open surfaces of the groove portions are covered between the pair of chain main bodies. It is characterized by comprising a plurality of slats to be spanned.

  On the bottom wall of the guide member, a rail member that extends between the pair of sprockets and on which the roller rolls protrudes upward.

  A guide groove extending between the pair of sprockets and rolling the roller is formed in the upper surface of the rail member.

  A plate-like scaffold plate configured as a worker's scaffold is laid at the same height as or lower than the open surface of the groove part across both side walls of the guide member, and the slat is vertically The guide plate is provided so as not to overlap the scaffold plate in the vertical direction while leaving a gap with the guide member.

  Below the guide member, an elastic member that is in contact with the upper surface of the slat is provided in parallel with the guide member with respect to the slat conveyed with the upper surface facing downward.

According to the conveyance conveyor of Claim 1, there exists the following effect. A pair of sprockets are provided at a predetermined interval in the conveyance direction of the conveyed product. An annular conveyor chain is stretched around the pair of sprockets. A guide member extends between the pair of sprockets, and a groove extending between the pair of sprockets is formed in the guide member. The guide member is provided between the pair of sprockets so that the open surface of the groove portion faces upward. The conveyor chain is provided with a plurality of rollers that roll in the groove. The plurality of rollers are rotatably provided between the pair of chain bodies. Specifically, the pair of chain main bodies are formed in an annular shape in which adjacent plates are rotatably connected to each other, and are arranged with a predetermined interval therebetween. The plurality of rollers are rotatably provided between the pair of chain bodies. In addition, a slat that is formed in a plate shape and on which a conveyed product is placed is spanned between the pair of chain main bodies. The conveyed product is placed on the slat. When one of the sprockets is driven, a plurality of rollers move between the pair of sprockets while rolling in the groove, and accordingly, a conveyed product placed on the slats moves between the sprockets. And since this slat is spanned between a pair of chain main bodies so that the open surface of a groove part may be covered in the state where the some roller is rolling the groove part, foreign materials, such as a bolt, a nut, and a wire, from the upper part Can be prevented from falling into the groove. Therefore, it is possible to prevent the fallen foreign matter from being caught in the conveyor chain and causing the conveyor chain to break down.
Further, a rail member is provided on the bottom wall of the guide member so as to protrude between the pair of sprockets and on which the roller rolls upward. Therefore, even if the foreign matter falls into the groove, the foreign matter falls on the bottom wall of the guide member. Therefore, it can prevent more effectively that the fallen foreign material is bitten by the conveyor chain, and the conveyor chain breaks down.
In addition, a guide groove extending between the pair of sprockets and rolling the roller is formed in the upper surface of the rail member. For this reason, when the conveyed product is placed on the slat, it is possible to restrict the moving direction of the roller from shifting to the left or right due to the left and right weight balance of the conveyed product. In addition, since the direction of movement of the roller can be regulated, the direction of movement of the roller is deviated, and as a result, a horizontal gap is generated between the end portion of the slat and the open surface of the groove, and foreign matter is allowed to enter the groove from the gap. Can be prevented from falling.

According to the transport conveyor of claim 2, wherein, in addition to the effects achieved by the conveyor according to claim 1 Symbol placement, the following effects. Since there is a gap in the vertical direction between the slat and the guide member, it is possible to prevent the slat from coming into contact with the guide member and inhibiting the rotation of the conveyor chain due to the friction. Therefore, the conveyor chain can be smoothly circulated. In addition, a plate-like scaffold plate configured as a worker's scaffold is laid at the same height as or lower than the open surface of the groove with both side walls of the guide member interposed therebetween. The slat is provided so as not to overlap the scaffold plate in the vertical direction. Here, the edge part of a scaffold plate may be formed so that it may wave up and down by the influence at the time of cutting. However, even if the edge of the scaffold plate is waved up and down, the slat is arranged so as not to overlap the scaffold plate, so the gap formed between the slat and the guide member is not Unaffected by the edge of the plate. Therefore, such a gap can be reliably ensured and the conveyor chain can be smoothly circulated.

According to the conveyance conveyor of Claim 3 , in addition to the effect which the conveyance conveyor of Claim 1 or 2 has, there exists the following effect. Below the guide member, a sliding member that comes into contact with the upper surface of the slat is provided in parallel with the guide member with respect to the slat conveyed with its upper surface facing downward. Therefore, the conveyor chain can be operated smoothly, vibrations generated in the conveyor chain can be reduced, and the conveyor chain can be prevented from being out of order and coming off the sprocket.

It is a top view of a slat conveyor. It is sectional drawing of the slat conveyor in the II-II sectional line of FIG. (A) is a side view of the conveyor chain, (b) is a bottom view of the conveyor chain viewed from the direction of arrow IIIb in FIG. 3 (a), and (c) is a conveyor chain taken along section line IIIc-IIIc in FIG. 3 (a). FIG. It is an expanded sectional view of the slat conveyor in the IV-IV sectional line of FIG. It is sectional drawing of the conventional slat conveyor.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view of the slat conveyor 1. FIG. 2 is a cross-sectional view of the slat conveyor 1 taken along the line II-II in FIG. 1 and 2, only a part of the conveyor chain 20 is illustrated, and the other part is illustrated by a one-dot chain line. Further, the illustration of the axle of the railway vehicle serving as a transported object is omitted, and the pallet P on which the axle of the railway vehicle is placed is indicated by a two-dot chain line.

  The slat conveyor 1 is used for transporting the axle of a railway vehicle at a railway vehicle inspection facility, and in particular, can prevent foreign matter from getting into the conveyor chain 20 and causing the conveyor chain 20 to break down. It is.

  The slat conveyor 1 mainly includes a pair of sprockets 10 and 11 provided at a predetermined interval in the transport direction X, an annular conveyor chain 20 spanned between the pair of sprockets 10 and 11, and the conveyor chain 20. It is comprised by the guide member 30 which forms a channel | path.

  As shown in FIG. 1, two sets of the pair of sprockets 10 and 11, the conveyor chain 20, and the guide member 30 are provided in parallel. A slat 23 is attached to each conveyor chain 20. The pallet P is bridged to each slat 23, and the axle (not shown) of the railway vehicle is placed on the pallet P. In this state, the sprocket 10 is driven and the conveyor chain 20 is circulated between the pair of sprockets 10 and 11, whereby the pallet P and the axle of the railway vehicle are transported in the transport direction X.

  In the railway vehicle inspection facility, the pallet P and the axle of the railway vehicle mounted on the pallet P are shown in FIGS. 1 and 2 on the upstream side of the slat conveyor 1 shown in FIGS. Although a transport device for transporting toward the slat conveyor 1 is further provided, in the present embodiment, illustration and description thereof are omitted.

  The pair of sprockets 10 and 11 transmit the rotation of the shaft 12 to the conveyor chain 20, and one set of sprockets 10 and 10 functioning as a driving side and one set of sprockets 11 and 11 functioning as a driven side It is constituted by.

  One set of sprockets 10 and 10 is fixed to both ends of the shaft 12. The shaft 12 is rotatably spanned via a bearing 13 between two struts 40 erected from the slab SL (see FIG. 2). A sprocket 14 is fixed in the middle of the shaft 12, and an annular chain (not shown) is spanned between the sprocket 14 and the sprocket 51 of the motor 50. Therefore, by driving the motor 50, the shaft 12 rotates through the chain, and the sprockets 10, 10 fixed to both ends of the shaft 12 can be rotated.

  One set of sprockets 11, 11 is fixed to a shaft 15. The shaft 15 is rotatably supported via a bearing 16 between a pair of support columns 41 erected from the slab SL (see FIG. 2). Therefore, by rotating the sprockets 10, 10, the sprockets 11, 11 can be rotated via the conveyor chain 20 spanned between the pair of sprockets 10, 11.

  As shown in FIG. 2, in addition to the pair of sprockets 10 and 11, a sprocket 17 is provided on the upstream side of the sprocket 11, and the conveyor chain 20 is engaged with the sprocket 17. The sprocket 17 adjusts the tension of the conveyor chain 20 and is provided to be movable up and down.

  That is, it is possible to adjust the tension of the conveyor chain 20 to be increased by setting the sprocket 17 downward, and to adjust the tension of the conveyor chain 20 to be low by setting the sprocket 17 upward. Therefore, the conveyor chain 20 can be adjusted to an appropriate tension, and the conveyor chain 20 can be prevented from coming off the sprockets 10 and 11.

  The conveyor chain 20 circulates between the pair of sprockets 10 and 11 and conveys the pallet P and the axle of the railway vehicle in the conveyance direction X between the pair of sprockets 10 and 11. Here, the configuration of the conveyor chain 20 will be described with reference to FIG. 3A is a side view of the conveyor chain 20, FIG. 3B is a bottom view of the conveyor chain 20 viewed from the direction of arrow IIIb in FIG. 3A, and FIG. 3C is FIG. It is sectional drawing of the conveyor chain 20 in sectional line IIIc-IIIc of a). FIG. 3 shows only a part of the conveyor chain formed in an annular shape.

  The conveyor chain 20 is a pair of chain bodies in which two adjacent chain bodies, which are formed in an annular shape by rotatably connecting adjacent inner plates 21a and outer plates 21b, are arranged with a predetermined interval therebetween. 21, a plurality of rollers 22 rotatably provided between the pair of chain bodies 21, and a plurality of slats 23 spanned between the pair of chain bodies 21 so as to cover the plurality of rollers 22 It is constituted by.

  Each of the pair of chain main bodies 21 includes an inner plate 21a and an outer plate 21b, and the inner plate 21a and the outer plate 21b are arranged in a staggered manner so that both end portions thereof overlap each other. The pair of chain main bodies 21 are arranged so that the inner plates 21a and the outer plates 21b face each other.

  Cylindrical bushes (not shown) are fixed to both ends of the inner plate 21a, and each roller 22 is rotatably provided by being loosely fitted to the bushes. At both ends of the outer plate 21b, end portions of connecting pins 24 that are loosely fitted in the bushes are caulked. Thereby, the inner plate 21a and the outer plate 21b are relatively rotatable, and the conveyor chain 20 can be bent as a whole.

  The roller 22 rolls when meshed with the sprockets 10 and 11, and rolls in a path (groove portion 31 a) of the conveyor chain 20 formed by the guide member 30 (first guide member 31), as will be described later. To do. Therefore, even when a heavy object is transported on the slat 23 like an axle of a railway vehicle, the weight can be received by the roller 22. Therefore, the conveyor chain 20 is restrained from being loosened, and the conveyor chain 20 can be smoothly circulated.

  The slat 23 is a portion on which the pallet P and the axle of the railway vehicle are placed, and is formed in a plate shape. The slats 23 are spanned between a pair of inner plates 21a facing each other and between a pair of outer plates 21b facing each other. Therefore, the slat 23 moves in conjunction with the pair of inner plates 21a or the pair of outer plates 21b.

  Next, with reference to FIG. 2, FIG. 4, the relationship between the conveyor chain 20 mentioned above and the guide member 30 which forms the channel | path of the conveyor chain 20 is demonstrated. FIG. 4 is an enlarged cross-sectional view of the slat conveyor 1 taken along the line IV-IV in FIG.

  As shown in FIG. 2, the guide member 30 includes a first guide member 31 that extends between the pair of sprockets 10 and 11 and forms a passage (outward path) of the conveyor chain 20 that travels in the transport direction X, and the first guide member 30. A second guide member 32 that extends in parallel with the first guide member 31 and forms a passage (return path) of the conveyor chain 20 that travels in a direction opposite to the conveyance direction X is formed below the first guide member 31.

  A spacer member 33 extending between the pair of sprockets 10 and 11 is provided between the first guide member 31 and the second guide member 32. The first guide member 31 is supported by the spacer member 33, and the second guide member 32 is connected to the spacer member 33. Note that both ends of the second guide member 32 are supported by the support column 40 and the support column 41, and the middle thereof is supported by the support column 42 erected from the slab SL.

  As described above, the sprocket 17 is provided on the upstream side of the sprocket 11 so as to be movable up and down. Therefore, a third guide member 34 that feeds the conveyor chain 20 from the second guide member 32 is provided on the upstream side of the sprocket 17.

  The third guide member 34 projects obliquely downward from one end side of the second guide member 32, and feeds the conveyor chain 20 conveyed via the sprocket 17 from the second guide member 32. Therefore, even if the route through which the conveyor chain 20 passes depends on the position of the sprocket 17, the conveyor chain 20 can be smoothly fed out from the second guide member 32.

  As shown in FIG. 4, the first guide member 31 forms a groove 31a extending between the pair of sprockets 10 and 11, and is provided between the pair of sprockets 10 and 11 with the open surface of the groove 31a facing upward. . That is, a path (outward path) of the conveyor chain 20 is formed by the groove 31a. Specifically, the first guide member 31 is made of channel steel having a bottom wall 31b and side walls 31c erected from both edges of the bottom wall 31b, and is surrounded by the bottom wall 31b and the side walls 31c. The groove portion 31a is formed by the space, and the groove portion 31a forms a passage (outward path) of the conveyor chain 20.

  The groove 31a is formed such that the width W1 of the open surface thereof is smaller than the width W2 of the slat 23. In other words, the width W2 of the slat 23 is formed larger than the width W1 of the open surface of the groove 31a. That is, the slat 23 is configured and arranged so as to cover the open surface of the groove 31a in a state where the roller 22 rolls on the groove 31a. Therefore, it is possible to prevent foreign matters such as bolts, nuts, and wires from falling into the groove 31a from above. Therefore, it is possible to prevent the fallen foreign matter from being caught in the conveyor chain 20 and causing the conveyor chain 20 to break down.

  A rail member 60 is provided inside the groove 31a. The rail member 60 is erected from the bottom wall 31 b of the first guide member 31 and extends between the pair of sprockets 10 and 11. A guide groove 61 extending between the pair of sprockets 10 and 11 is recessed on the upper surface of the rail member 60, and the roller 22 of the conveyor chain 20 rolls between the pair of sprockets 10 and 11 along the guide groove 61. Move.

  Therefore, when the pallet P (axle of a railway vehicle) is placed on the slat 23, it is possible to restrict the movement direction of the roller 22 from shifting to the left or right by the weight balance between the left and right. Further, since the traveling direction of the roller 22 can be regulated, the traveling direction of the roller 22 is deviated, and as a result, a horizontal gap is generated between the end portion of the slat 23 and the open surface of the groove portion 31a. Can be prevented from falling into the groove 31a.

  Further, the guide groove 61 is recessed on the upper surface of the rail member 60 erected from the bottom wall 31 b of the first guide member 31. Therefore, even if the foreign matter falls into the groove portion 31a from the vertical gap S formed between the slat 23 and the groove portion 31a, the foreign matter falls on the bottom wall 31b of the first guide member 31. Become. Therefore, it can prevent that the fallen foreign material is bitten by the conveyor chain 20, and the conveyor chain 20 breaks down.

  An L-shaped steel 35 extending along the first guide member 31 is fixed to both side walls 31 c of the first guide member 31, and a plate-like scaffold plate 70 is fixed to the L-shaped steel 35. The scaffold plate 70 is composed of a striped steel plate with anti-slip protrusions (see FIG. 1) continuous on the surface by rolling, and serves as a scaffold for workers who perform inspection work.

  The L-shaped steel 35 has both side walls 31c of the first guide member 31 such that the upper surface of the scaffold plate 70 and the upper surface of the side wall 31c of the first guide member 31 (the open surface of the groove portion 31a) have substantially the same height. It is fixed to. On the other hand, the upper surface of the slat 23 is provided so that the height H from the upper surface of the scaffold plate 70 (the upper surface of the side wall 31c of the first guide member 31) is about 10 mm. It is formed to about 5 mm.

  That is, a gap S of about 5 mm is formed in the vertical direction between the lower surface of the slat 23 and the upper surface of the side wall 31 c of the first guide member 31. Therefore, it can suppress that the lower surface of the slat 23 contacts the upper surface of the side wall 31c of the 1st guide member 31, and the rotation operation | movement of the conveyor chain 20 is inhibited by the friction. Therefore, the conveyor chain 20 can be smoothly circulated.

  Moreover, since the level | step difference between the upper surface of the slat 23 and the upper surface of the scaffold plate 70 is about 10 mm, the operator who works on the scaffold plate 70 can also reduce the possibility that the step is rolled. Further, since the width W2 of the slat 23 is about 100 mm, the worker can easily straddle the slat 23, and the work efficiency of the axle inspection work can be improved.

  Further, the slats 23 are arranged so as not to overlap with the scaffold plate 70. In other words, the width W2 of the slat 23 is substantially the same as the width of the side walls 31c of the first guide member 31. The edge portion of the scaffold plate 70 may be formed so as to wave up and down due to the influence of cutting. However, even if the edge portion of the scaffold plate 70 is formed so as to wave up and down, the slat 23 is disposed so as not to overlap the scaffold plate 70, so the lower surface of the slat 23 and the first guide member The gap S formed between the upper surface of the side wall 31 c of the 31 is not affected by the edge of the scaffold plate 70. Therefore, such a gap S can be reliably ensured. Therefore, the conveyor chain 20 can be smoothly circulated.

  On the other hand, the second guide member 32 forms a groove 32a extending between the pair of sprockets 10 and 11, and is provided between the pair of sprockets 10 and 11 with the open surface of the groove 32a facing upward. That is, a path (return path) of the conveyor chain 20 is formed by the groove 32a. Specifically, the second guide member 32 is made of channel steel having a bottom wall 32b and a side wall 32c standing from both edges of the bottom wall 32b, and is surrounded by the bottom wall 32b and the side wall 32c. A groove 32a is formed by the space, and a path (return path) of the conveyor chain 20 is formed by the groove 32a.

  A sliding member 62 is provided inside the groove 32a. The sliding member 62 is erected from the bottom wall 32 b of the second guide member 32 and extends between the pair of sprockets 10 and 11. The sliding member 62 is provided so as to contact the upper surface of the slat 23 with respect to the slat 23 conveyed with its upper surface facing downward. Therefore, since the conveyor chain 20 can be operated smoothly, vibration generated in the conveyor chain 20 can be reduced, and the conveyor chain 20 can be prevented from being violently separated from the sprockets 10 and 11.

  With respect to the guide member 30 (the first guide member 31 and the second guide member 32) configured as described above, the conveyor chain 20 circulates between the pair of sprockets 10 and 11 as follows. That is, as shown in FIG. 2, the conveyor chain 20 travels in the transport direction X along the first guide member 31 in the first guide member 31, and the travel direction is opposite to the transport direction X by the sprocket 10. Wrapped in the direction.

  The conveyor chain 20 whose travel direction is folded enters the second guide member 32. Then, it travels in the direction opposite to the transport direction X along the second guide member 32, is sent out from the third guide member 34, passes through the sprocket 17, and then the travel direction again becomes the transport direction X by the sprocket 11. The first guide member 31 is advanced in the transport direction X along the first guide member 31.

  Since the conveyor chain 20 circulates in the passage formed by the guide member 30 in this manner, the pallet P placed on the slat 23 of the conveyor chain 20 and the axle of the railway vehicle are connected between the pair of sprockets 10 and 11. Can be transported in the transport direction X.

  As described above, the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

  In the above-described embodiment, the case where the roller 22 of the conveyor chain 20 rolls along the guide groove 61 has been described. However, the present invention is not limited to this. For example, you may comprise so that the roller 22 of the conveyor chain 20 may roll directly on the upper surface of the rail member 60, without providing the guide groove 61 in the upper surface of the rail member 60. FIG. Moreover, you may comprise so that the roller 22 of the conveyor chain 20 may roll directly on the bottom wall 31b of the 1st guide member 31, without providing rail member 60 itself. Further, a groove is provided in the roller 22, and a rail that fits into the groove provided in the roller 22 protrudes from the upper surface of the rail member 61 or the bottom wall 31 b of the first guide member 31. good.

  In the above-described embodiment, the case where two pairs of the sprockets 10 and 11, the conveyor chain 20, and the guide member 30 are provided in parallel has been described. However, the present invention is not limited to this. Three or more sets may be used.

  Furthermore, although embodiment mentioned above demonstrated the case where the 1st guide member 31 was comprised with channel steel, it is not limited to this. For example, you may make it provide the flange bent inside from the front-end | tip of the both-sides wall 31c of the 1st guide member 31. FIG. In this case, the slat 23 is provided so as to overlap with the flange. Even if comprised in this way, the effect similar to embodiment mentioned above is acquired.

1 Slat conveyor (conveyor)
10, 11 Sprocket 20 Conveyor chain 21 Chain body 21a Inner plate (plural plates)
21b Outer plate (multiple plates)
22 Roller 23 Slat 31 First guide member (guide member)
60 Rail member 61 Guide groove 70 Scaffold plate 80 Sliding member

Claims (5)

A pair of sprockets provided at a predetermined interval in the conveyance direction of the conveyed product, and an annular conveyor chain that spans the pair of sprockets, and drives one of the pair of sprockets to circulate the conveyor chain. In the transport conveyor that transports the transported object between the pair of sprockets,
Forming a groove extending between the pair of sprockets, and having a guide member provided between the pair of sprockets with the open surface of the groove facing upward;
The conveyor chain is
A pair of chain bodies arranged adjacent to each other with a predetermined interval between two chain bodies formed in an annular shape by connecting adjacent plates rotatably;
A plurality of rollers rotatably provided between the pair of chain bodies and rolling the groove portion;
A plurality of slats formed between the pair of chain bodies so as to cover an open surface of the groove part in a state where the plurality of rollers roll on the groove part, and are formed in a plate shape on which the conveyed product is placed; It is equipped with the conveyance conveyor characterized by the above-mentioned.   The conveyor according to claim 1, further comprising: a rail member projecting upward from a bottom wall of the guide member and extending between the pair of sprockets, and an upper surface of the rail member on which the roller rolls.   The conveyance conveyor according to claim 2, further comprising a guide groove that is recessed on an upper surface of the rail member and extends between the pair of sprockets, and the roller rolls. A plate-like scaffolding plate that is laid below the same height as the open surface of the groove part across the both side walls of the guide member or below, and configured as a scaffold for workers,
The said slat is provided so that it may not overlap with the said scaffold plate in an up-down direction, leaving a clearance gap between the said guide members in an up-down direction. Conveyor conveyor.   A sliding member that is provided in parallel with the guide member below the guide member and that contacts the upper surface of the slat is provided for the slat conveyed with the upper surface facing downward. Item 5. The conveyor according to any one of Items 1 to 4.

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